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Classic Currents

(1) Tested 1958 Tung Sol 14R7 Tube with Box Date Code 826 Twin Diode Pentode (b)

(1) Tested 1958 Tung Sol 14R7 Tube with Box Date Code 826 Twin Diode Pentode (b)

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(1) Tested Tung-Sol 14R7 Loctal Tube with Original Box.
Date Code 826 (26th week of 1958).

Tested on a calibrated Hickok TV-10 military tube tester with no shorts and no leaks with the following results:

Gm Test = 2500 micromhos
Minimum pass/good = 1900
Both diode sections test at 1350 and 1175 where 800 is minimum pass/good.

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